Shutter-lock.



F. T. SKELTON.

SHUTTER LOOK.

APPLICATION FILED AUG.14,1908.

Patented Dec. 22,1908.

nventoz witnmom FRED T. SKELTON,

OF BIRMINGHAM, ALABAMA.

SHUTTER-LOCK.

Specification of Letters Patent.

- Patented Dec. 22, 1908.

Application filed August 14, 1908. Serial N 0. 448,559.

To all whom it may concern:

3e it known that I, FRED l SKELTo N,

which the following is a specification.

y invention pertains to permutation locks; and it has for its object to provide a simple and strong permutation lock constructed with a view of securing shutters in a closed position and in such a manner that the shutters cannot be opened from within by any but a person cognizant of the combination of the lock and cannot be opened by a person without except with the expenditure of such force as would wreck the shutters and make suflicien noise to alarm a neighborhood.

With the foregoing in mind, the invention will be fully understood from the following description and claim when the same are read in connection with the drawings, accompanying and forming part of this specification, in which:

igure 1 is a view taken in a plane above my novel lock and illustrating the arrangement of the same relative to a pair of shutters and the sill of a window casing. Fig. 2 is a horizontal section taken through the lock. Fig. 3 is an inverted plan View of the lock, with the closure plate thereof removed. Fig. 4 is a section taken diametr'cally through the spindle and the rotating tumblers of the lock. Fig. 5 is a detail side elevation showing the spindle and tumblers and one of the bolts of the lock.

Similar letters designate corresponding parts in all of the views of the drawings, referring to which:

A is the casing of the lock constituting the best practical embodiment of my invention known to me, and N is the plate for closing the opening a in the base of the casing. In addition to the opening a the casing base is provided with flanges a having apertures c for the passage of screws 0, preferably emas the means for fixedly connecting the casing to the sill of a window casing. will also be noted by reference to Figs. 2 and 3 that the casing A is provided in its portion adjacent to the shutters, presently described, with an opening a for an important purpose hereinafter set forth.

are shutters of the conventional con- I struction or of any other construction consonant with the purpose of my invention.

C are bolts, and D D are holders permanently connected by screws d or other suitable means to the inner sides of the shutters and having for their function to effect connection between the bolts C and the shutters. The bolts 0 are each formed of a single piece of suitable material, and respectively comprise an angular body portion S, a shank T reaching at right angles from the inner end of said body portion and terminating in a head 0 and lateral projections P extending at right angles from the upper portion of the outer end of said body portion. The holders D are each provided with a vertical slot (Z to receive the outer portion of a bolt body S, and each is also providedin its side opposed to the inner side of a shutter with a recess (i disposed at right angles to the slot 12 and designed to receive the lateral projections P of the bolt complementary thereto. Thus it will be manifest that when the bolts C are arranged with their lateral projections P in the recesses d of the holders D permanently attached to the shutters E, permanent connection between the bolts 0 and the shutters E will be effected, and the bolts will be moved with the shutters. It will also be manifest that when the shutters are closed, the shanks T of the bolts will extend through the opening a in the casing A, and the bolt heads 0 will assume positions within said casing, as best shown in Fig. 2.

3 is a spindle journaled in the closure plate N and in the top wall of the casing A, and having an intermediate angular portion H, Figs. 2 and 4, and also having an operating handle I) and a numbered disk I), designed to cooperate with the fixed dial, hereinafter described.

G is a rotary tumbler loosely mounted on the spindle E and arranged adjacent to the closure plate N and having a flange b in which is a recess 6, and also having an arm k.

G is a rotary tumbler which receives the angular portion H of the spindle E and hence is adapted to turn with the said spindle. Said tumbler G is provided with a flange b in which is a recess 6, and is also provided with an arm h designed to cooperate with the arm h of tumbler G in the manner hereinafter described.

B is a dial fixed on the top of the casing A and bearing numerals which are preferably sltarranged in regular sequence as shown in ig. 1.

In assembling the parts shown in Fig. 4, the spindle E is passed through the casing top A and through the tumblers G and G and the closure plate N, in the order named, after which a cotter pin b is passed through an aperture in the spindle at a point below the closure plate N. When the said parts are relatively arranged as stated, it will be manifest that there is no liability of any one of the same becoming casually disarranged.

In the practical operation of my novel lock, it will be seen that when the recesses b in the tumblers are registered with each other and with the opening a in the casing A, the heads 0 of the bolts C may be freely moved into and out of the casing. It will also be observed that when either one or both of the tumblers are turned to carry the recess or recesses 19 out of alinement with the casing opening a the bolts cannot be withdrawn from the casing, and consequently the shutters E will be securely locked in their closed position.

WVhen the shutters are locked as described, it is simply necessary for a person to work the spindle E so as to turn the tumblers G and G according to the combination for which the lock is set, when, as will be readily understood, the arm 71/ of the tumbler G cooperating with the arm h of the tumbler G will position the tumblers with their recesses b in registration with the opening a in the casing A, and the bolts C may then be withdrawn from the casing A to permit of opening of the shutters E.

It will be gathered from the foregoing that a person within the building must be aware of the combination of the look before he can open the shutters, and from this it follows that when the shutters are locked they cannot be opened by an unauthorized person located either within or without the building unless the shutters are wrecked and sufficient noise is made to alarm the neighborhood.

With a view of enabling a person in audial, a rotary thority' to lock the tumbler G o as to prevent manipulation of the tumblers to unlock or to lock the shutters E, I provide the screw K, Fig. 3. The said screw K bears in the casing A and is designed to be turned into and out of engagement with the tumbler G and when the said screw is turned out of engagement with the tumbler G it obviously will not interfere with the working of the lock in the manner before described.

Having described my invention, what I claim and desire to secure by Lettersl?atent, 1s:

The combination in a shutter lock, of holders adapted to be attached sides of shutters and having vertical slots and also having recesses. communicating with the slots and formed in their sides which are opposed to the shutters, bolts having angular bodies and lateral projections arranged on the outer portions of the bodies and disposed in said recesses of the holders and also having shanks extending from the inner ends of the bodies and terminating in upright T-heads, a casing adapted to be connected with the sill of a window casing and having an opening adapted to receive the shanks of the bolts, a dial on said casing, a spindle journaled in the casing and provide with means adapted to cooperate with the tumbler loosely mounted on the spindle and having a recess adapted to be registered with the opening in the casing and also having an arm, and a rotary tumbler mounted on the spindle to turn therewith and having a recess adapted to register with the opening in the casing and the recess in the first named tumbler, and also having an arm adapted to cooperate with that of the first named tumbler to turn the latter. In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

FRED T. S1 ELTON- Witnesses:

H. E. WARNER, HENRY DENEGRE.

to the inner 

